<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="说明：">
        <el-tag type="info"
          >请下载excel模版，并且按照模板修改再上传到服务器。</el-tag
        >
        <el-tag>
          <i class="el-icon-download" />
          <a
            :href="
              OSS_PATH +
                '/excel/%E8%AF%BE%E7%A8%8B%E5%88%86%E7%B1%BB%E5%88%97%E8%A1%A8%E6%A8%A1%E6%9D%BF.xls'
            "
            >点击下载模版</a
          >
        </el-tag>
      </el-form-item>

      <el-form-item label="上传：">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API + '/eduservice/edu-subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel"
        >
          <el-button slot="trigger" size="small" type="primary"
            >选取文件</el-button
          >
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload"
            >{{ fileUploadBtnText }}</el-button
          >
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
export default {
  data() {
    return {
      BASE_API: process.env.BASE_API, // 接口API地址
      OSS_PATH: process.env.OSS_PATH, // 阿里云OSS地址
      fileUploadBtnText: '上传到服务器', // 按钮文字
      importBtnDisabled: false, // 按钮是否禁用,
      loading: false
    }
  },
  methods: {
    fileUploadSuccess(response) {
      if (response.success !== true) return
      this.fileUploadBtnText = '导入成功'
      this.loading = false
      this.$message({
        type: 'success',
        message: response.message
      })
      this.$router.push({ name: 'subjectList' })
    },
    fileUploadError() {
      this.fileUploadBtnText = '导入失败'
      this.loading = false
      this.$message({
        type: 'error',
        message: '导入失败'
      })
    },
    submitUpload() {
      this.fileUploadBtnText = '正在上传'
      this.importBtnDisabled = true
      this.loading = true
      this.$refs.upload.submit()
    }
  }
}
</script>
